Lock



Dec. 20, 1927. 1,653,511

w. Fe. sHLAGE LOCK Filed May 9, 1923 2 Sheets-Sheet l www www@ @d Dec. 2 0, 1927.

W R. SCHLAGE LOCK Filed May 9, 1925 2 Sheets-Sheet 2 i 25 Fig. 5.

-Patented Dec. 20, 1927.

UNITED STATES 1,653,511 PATENT OFFICE.Il

WALTER 1R. SCHLAGE, OF SAN FRANCISCO, CALIFORNIA, ASSINOR TO SCHLAGE LOCK COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

LOCK.

Application vfiled May 9,

This invention relates to locks and es ecially to a key-actuated lock of the tumb er t e.

y'rlhe object of the present invention is to generally improve and simplify the construction and operation of locks of the character described, and especially to provide a rocking type of tumbler whereby a bolt, latchor the like, may be actuated.

One form which my invention may assume is exemplified in the following descrip tion and illustrated in the accompanying drawings, in which- Fig. .1 is a section on line 1 1, Fig. 2.

Fig. 2 is a vertical section on line 22, Fig. 1.

Fig. 3 is an enlarged fragmentary detail view showing the rocking tumblers and the ke whereby they are actuated. y Fig. 4 is a perspective view of the barrel.

Fig. 5 is a perspective view of the tumbler carrier. f v

Fig. 6 is a perspective view of the key.

Fig. 7 is a cross-section on line 7-7,

Referring to the drawings in detail, and particularly toFigs. 1 and 2, A indicates an ordinary lock housing, in which is slidably mounted a latch or keeper 2. Forming an .30 extension of the keeper is a plate 3,'and

formed in one end thereof is a transverse slot 4 through which projects a pin`5.

The latch 2 is normally held in a projected position by means of a spring 6. This spring is disposed in a central longitudinal s ot 7 formed in the plate 3, one end of the spring being@ secured to a pin 8 which in turn is secured to the lockl casing A, and the o posite end of the spring being secured With the spring arranged as shown, it can be seen that a pull is exerted inthe direction of arrow a, and that the latch or keeper 2 will under ordinary -conditions. assume a Vprojected position. f

The mechanism so far described merely illustrates an ordinary form of lock, said illus- ,tration and description being made only for the purpose of showing one of the uses of thekey-actuated locking mechanism, which forms Athe subjectmatter of thek resent application. The key-actuated locking mecha-y nism is best illustrated in Figs. 1, 3, 4, 5, 6 and 7. This mechanism is contained in a cylindrical housing 10 secured to one side of the function of normally maintaming the to a ug 9 forminga part of v the plate 3f 1928. Serial N0. 687,638.

' end of the barrel 12, and which form a support for a pair of rocking tumblers, generally indicated at 17 and 18. .These tumblers are pivotal-ly mounted between the plates 15 and 16as indicatedat 19, andthey serve the 'I0 function ofnormally locking the tumbler' carrier with relation to the barrel 12. The

.tumblers are perhaps best illustrated in Figs. 3 and 5. They 'are elongated as, shown. Their forward ends terminate in cam-shaped heads, such as indicated at 20 and 21, while their opposite ends terminate in lugs 22 between which is disposed a helical tension spring 23; thisv spring serving tumblers in locking position; that is, the tumbler carrier and the tumblers supported thereby normally align with the slots 13 and 14 formed in the barrel and as this is the case one end or another of the respective tumblers will be projected into the slots and as such will lock the tumbler carrier against rotation.

Secured on ther outer end of the plates 15 and 16, which forms the main frame of the tumbler carrier, is a circular 'disk 24. This disk forms a bearing Ifor lone end of the tumbler carrier and it also serves the function of a ide for a key such as shown in Fig. 6 that 1s, the face of the disk is slotted to permit insertion of the key. The plates 15 and 1 16 terminate in laterally extendln; foot lugs,

such as indicated at 25. These gs terminate in semi-circularv ends as shown in Fig. 5, and the disk 24 is, therefore, merely 100 crimped 4over the edges of the lugs 25, thus forming a simple manner for securing the members 15 and 16 with relation to the disk, and at the same time permitting the d isk to serveas abearing and as a key guide therefor. The opposite ends of the plates 15 and 16 similarly terminate in foot lugs, such asshown at 26; these lugs being secured to a circular disk 27, whichwill hereinafter be referred to as a rotating head, as this 110 the 110 key is offset, as at 29, (see Figs. 6 and 7) to form a projection which will enter one or another of the slots 28 and when it so enters, it can readily be seen that tilting of the key will be prevented and that an efficient gulde "35 will be provided therefor. The face of the g3@ and 21 ofthe respective tumblers.

key may be indented or recessed in one or more places, as shown at 30, but such recesses or indentations must be positively located to permit registration with'the cam ends 20 The operation will be as follows 1f it yis desired to open the lock it is first necessary to insert the key through the slot formed 1n the disk 24. The key, when inserted to the position shown in Fig. 3, will cause the tumblers to assume a parallel position with relation to the plates 15 and 16 and also with relation to the inner surface of the locking barrel 12, and, when this parallel position of the tumbler is assumed,

it is possible to freely rotate the tumbler carrier. The head member 27, which is secured to the tumbler carrier, will, therefore, rotatein unison with the same, and as pin 5 ijs secured to the head member 27 and projects through the slot 4 in the plate 3, it can be seen that the latch or keeper 2 will either be retracted Aor projected, as the case may be; abone-half revolution in either ,direction being suiiicient to 'retract or project the latch y2. It will furthermore be seen that the latch may be locked yeither in a retracted or a projected position as it is impossible to remove the key except when one of the positions referred to fis assumed; that is, any attempt to retract the .key before the tumblers 17 and 18 align with the slots 13 and 14 will be frustrated as norocking movement can be imparted tothe tumblers except when they align with the slots. The key may,

, however, be retracted or removed from the tumbler carrier when the latch is completely 'retracted as the tumblers will then nalign with the slots in the locking barrel, and the key may, similarly, be retracted for removed from the tumbler carrier when the latch is fully projected as the tumblers will then valign with the slots in the locking barrel; that is, the cams 20 and 21 formed on the respective tumblers 17 and 18 ride on the edges of the key indicated at 40 and 41. When riding on the high surfaces, the tumrbler 17 will assume 'the dotted Iline position 1 indicated at 42, and when assuming this position projects into the slot 13. When the key is fully inserted, recess 30 aligns with the cam 21 and as a consequence the tumbler 17 assumes a arallel osition with relation to the key'an the loc ing barrel, thus permitting rotation of the tumbler carrier, providing, tumbler 18 also .assumes a parallel position. When the key is retracted the tumbler 17 assumes 'the dotted line position indicated at 43 and the opposite end of the tumbler or that indicated at 44 will then be projected into the slot 13 in the locking barrel, and as such will again secure the tumbler carrier against rotation, the position shown at 43 being maintained when the key is removed due to, the pressure exerted by the spring 23, and the position 42 being assumed when the cam 41 rides on the outer edge or surface 40 of the ke A. great number of com `inations can be produced by/amploying a tumbler arrangement such as here shown. For instance, a long and short tumbler, such as shown at 17 and 18, in Fig. 3, may be employed; that is,

the tumbler 17 may be maintained a cons'tant len h, while the length of the tumbler 18 may e increased or decreased. Again, a constant length may be maintained, as far as the tumbler 18 is concerned, and the length of the tumbler 17 may be increased or decreased. Further, both tumblers ma be increased ordecreased and their len ld maintained uniform. Again, it is possi le to form two or three cam projections, such as indicated at 20 and 21, or it is possible to make two or more-cam projections on one or either tumbler, and as this is the case it is obvious that unlimited combinations may be obtained.

While the resent invention shows a ke actuated tum ler mechanism as a plied 1n a specific manner to a bolt or latch) type of loc I wish it understood that this is merely for the purpose of illustration'as it is obvious that the tumbler mechanism here illustrated may be applied to a great variety of locks and that the pin 5 may, therefore, in a great man instances be entirely eliminated. I also wis it understood that the materials and' finish of the' several parts employed may be such as the experience and judgment of the manufacturer maydictate or various uses may demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. In a lock of the character described, a housing, a cvlindricalsleeve secured therein, said sleeve having a pair of longitudinally disposed slots formed therein which are diametrically opposite, a tumbler carrier rotatable in the sleeve, said carrier consisting of a pair ofparallel interspaced plates, a disk-shaped head secured at one end of the plates and havin a crank pin mounted thereon, a pair o tumbler plates disposed a spring interposed between the same and normally projecting the inner ends of the tumbler plates in to the slotted portions of the sleeve.-

2. In a lock of the character described, a

10 tumbler carrier consisting of parallel interspaced plates, elongated tumbler members disposed between the plates, .pivot members vextending; through, the tumblers and the tumbler plates intermediate the ends of the tumblers, lugs on the inner ends of the tumblers, a spring interposed between said lugs, and cam members formed on the outer ends of the tumblers.

WALTER R. SCHLAGE. 

